The Check Rules facility
The Check Rules facility checks for:
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Bad property values (wrong type of value)
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References to nonexistent data properties
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Conditions that do not currently apply to any object in the data, indicating rules that may be useless (however, such rules may be useful with a different data set and so do not always constitute an error)
To check your rules, choose Edit>Check Rules or click the Check Rules button in the Messages panel.
The result of the check appears as a series of messages in the Messages panel, see
Messages for troubleshooting. Note that messages of all levels are displayed, regardless of the filter level set in the Messages panel.
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